Wall-board joint-filler strip



July 3, 1928. 1,676,076

M. J. BUCHANAN WALL BOARD JOINT FILLER STRIP Filed July 12, 1927INVENTOR. 1/ BUG/719M601} ATTORNEY.

Patented July 3, 1928.-

UNITED STATES MONTY J. BUCHANAN, OF SEATTLE, WASHINGTON.

WALL-BOARD OINT-FILLER STRIP.

Application filed July 12,

This invention relates to a process and means for completing thejuncture between wall hoard sections in forming a wall to avoid theappearance of unsightly. cracks or openings at the juncture between thewall boa rds.

lt is well known that. wooden framework to which the wall boards arenailed will shrink and expand with weather conditions, inducingcorresponding movement in the wall. board sections and thus producingthe unsightly cracks or openings which the present invention aims toovercome. Attempts have been madeto avoid this objection by insertingwooden or like strips between wall boards but the correction is buttemporary as the inserted strips do not partake of the same expansionand contraction as the wooden framework and eventually that separationoccurs tending to produce the unsightly appearance referred to. p

The present invention aims to overcome these ditliculties by inserting afilling strip which is more or less ex pansihle and which is so formedas to provide for self-ventilation to compensate for differences inexpansion and contraction.

The invention is illustrated in the accompanying drawings, in which:

Figure l is a view in elevation'showing adjacent wall boards and the useof the improved sealing strip.

Figure 2 is a section on line 2-2 of Figure 1. i

Figure 3 is a broken perspective View 0 the sealing strip.

The wall boards 1 are nailed or otherwise secured to the woodenframework 2 in proriding a wall structure, and for the purposes of thepresent invention the adjacent edges of the wall boards are spacedslightly apart to provide a channel 3.

A sealing or spacing strip 4 is inserted in the channel 3. such stripbeing of a thickness slightly exceeding that of. the channel and beingitself channeled on the under side, as at 5, to leave comparativelynarrow more or less resilient. leg portions 6. If desired,

1927.' Serial No. 205,197.

the strip. is'slightly greater in width than the space, there is africtional holding provided between the wall board and the edges of thestrip, it being understood that the leg 6 will yield slightly tocompensate for the difference in width.

The surplus cementing, material is then {wiped off the face and when thestrip is finally seated'by the hardening of this materiah it Will befound that the ventilating space provided by the channel 5 in the stripis suflicient to subject the strip to substantially thesame expansionand contraction as that of the wooden framework 2. Therefore, as thestrip yields with the wooden framework, it naturally maintains a tight.juncture between the adjacent edges of the wall board and the usualunsightly cracks appearing under wall board application as heretofore.provided are entirely avoided.

It is, of course, to be understood that the con'ibined sealing andspacing strip may be constructed of wood. cork or other desirable andappropriate material.

\Vhat I claim to be new is:

1. The process of securing wall board sections to a framework,consisting of securing the sections to the framework with their edgesspaced apart from each other, depositing of shellac or the like withinthe space and the insertion of a strip into the space, having aventilating channel througln out. its length.

2. A sealing strip for the junctin'e. of wall boards, comprising asection adapted to be forced between the adjacent edges of the boards,said section being longitudinally

